Fix Flanders pilot definition

static/pilots.json

@@ -1,6 +1,6 @@
 [
   {
-    "nuts": "BE251",
+    "nuts": "BE2",
     "name": "Flanders",
     "desc": "Flanders is the northern region of Belgium. It covers an area of 13 521 km² and counts approximately 6.35 million inhabitants. The region has a very high population density (475 inhabitants per km²) which is more than four times the average density of the European Union. Only 7% of the area is rural and 2.5% of the population lives in the rural area. The average age of farmers is more than 50 years (only 5% of farmers are younger than 35 years). Few farmers have a successor. Young farmers suffer from a lack of funds when starting up and therefore need some support.",
     "vision": "The overall ambition is to create sustainable climate resilient productive landscapes, balancing agricultural intensification with environmental concerns and climate resilience.",